The Warhammer games use several sizes of orcs...
Trolls 7'-12'
Orcs 5'-7'
Goblins/Gretchins 3'-5'
Snotlings 2'-3'
---------------------I only heard about the snotlings. I of course know about trolls, orcs and goblins from Tolkien and other fantasy games, but that is another timeline and another universe for us. When we do sci-fi it is all traveller/Striker.
Warhammer Bolters are caseless weapons firing large (20mm x 70mm) explosive tipped projectiles; the projectile is fired with an initial charge, but also has a sustainer rocket.
--------------------The bolter idea has been in our traveller universe since the early 80s. The idea was that bolters were a solid core very dense shot propelled by a plasma (None of us are really sure exactly how that works, but it never stopped us. We all admit its a bit too much like the "Zaptron ray", but none of us have bothered to dig out their physics books and offer a more plausible explanation of bolter technology.) and that they are relatively short-ranged and inaccurate. The Aslan developed the technology and are the only race that use it.
-----------------Our bolters pack a huge punch at short range and penetrate any armor available at their tech level. At short range they are devastating!
--------------Our Bolters come on the scene early (at tech 6!), because the Aslan are relatively more advanced technology-wise early on. So while the Solomani are fighting WWI with water-cooled machine guns on Terra. The Aslan are dueling with bolters. Later when the Intersellar wars occur. The Solomani have ACRs, lasers and the like, but the tradition-bound Aslan are still fighting with bolters, because it is the "honorable" thing to do. As soon as they lose a few battles to the better-armed Solomani and see that they do not play by the "rules", the Aslan switch more to using longer range sniper rifles and eventually develop their bolter technology in to a laser technology of their own. They also capture and reverse-engineer Solomani lasers. By tech 8-9 bolters have largely disappeared and been supplanted by lasers and such. So it is IMTU.
As for SJ's earlier game: The RPG is "The Fantasy Trip", Meleé is the combat system module, Wizard is the magic system module, and In the Labyrinth is the campaign module.
--------------------------Yes, I know. I at one time had all of those books. We play a modern day variant of these 3 for our medieval fantasy stuff.
-----------------However for Sci-Fi gaming, we rely strictly on a striker/classic traveller mix. We don't mix the mêlée and the traveller game-engines together.
Ty Beard's traveller crossover is in the files area; I uploaded it with his permission.